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Beaded ultrafine fiber material with bead morphology and preparation method thereof

A fiber material and bead technology, which is applied in the field of micro-nano material preparation, can solve problems such as bead morphology and size regulation, and achieve the effect of broad application prospects.

Active Publication Date: 2016-09-21
NANTONG TEXTILE & SILK IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent with the publication number CN 104645715A discloses a high-efficiency and low-resistance nanofiber air filter material for masks and its preparation method. Shape and size control

Method used

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  • Beaded ultrafine fiber material with bead morphology and preparation method thereof
  • Beaded ultrafine fiber material with bead morphology and preparation method thereof
  • Beaded ultrafine fiber material with bead morphology and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Dissolve 25.44 g of sodium carbonate in 12 L of boiling deionized water, add 30 g of silk, stir for 30-40 min, and then wash the degummed silk fibroin five times with normal temperature deionized water. Spread the washed silk fibroin on an aluminum foil paper, and put it in a 60°C oven to dry for 24 hours.

[0025] 2. Take out the dried silk fibroin, and dissolve the silk fibroin with 76 mL of 9.3 mol / L lithium bromide solution. When dissolving, lithium bromide solution and silk fibroin should be put into the beaker alternately, then sealed with plastic film, put in a 60°C oven for 4-5 hours, and shake once every 30 minutes.

[0026] 3. Put the lithium bromide solution of the obtained silk fibroin into a dialysis bag, dialyze with deionized water to remove impurities such as lithium bromide, and centrifuge at 9000 r / min for 20 min with a high-speed centrifuge to obtain a pure silk fibroin solution. At this point the concentration of the solution is about 7 wt%.

[...

Embodiment 2

[0032]1. Put 1 kg of cocoon shells into 50 liters of 0.5 wt% sodium carbonate solution, treat them at 98-100°C for 2 hours to degumming the cocoon shells, and obtain pure silk fibroin after fully washing. The pure silk fibroin after drying with 5 liters of lithium bromide aqueous solution of 9.3 mol / L, at 65 + Stir to dissolve at 2°C.

[0033] 2. Using cellulose membrane as the dialysis material, dialyze the obtained lithium bromide solution of silk fibroin with deionized water to remove impurities such as lithium bromide, and centrifuge at 9000 r / min for 20 minutes in a high-speed centrifuge to obtain pure silk fibroin protein solution.

[0034] 3. Put the silk fibroin solution in an oven at 60°C until the volume is reduced by half, then slowly concentrate the solution in a fume hood to make the concentration higher than 20 wt%, and then dilute the solution with deionized water, Make the concentration 0.5 wt%, stir evenly, seal and place in an oven at 60 °C until a gel cont...

Embodiment 3

[0040] 1. Put 200 grams of silk into 10 liters of 0.3% sodium carbonate aqueous solution, and treat it at 98-100°C for 2 hours to degumming the silk, and obtain pure silk fibroin after fully washing. With the dried pure silk fibroin, with 100 milliliters of 9.3 mol / L lithium bromide aqueous solution at 65 + Stir to dissolve at 2°C.

[0041] 2. Using cellulose membrane as the dialysis material, dialyze the obtained lithium bromide solution of silk fibroin with deionized water to remove impurities such as lithium bromide, and centrifuge at 9000 r / min for 20 minutes in a high-speed centrifuge to obtain pure silk fibroin protein solution.

[0042] 3. Put the silk fibroin solution in an oven at 60°C until the volume is reduced by half, then slowly concentrate the solution in a fume hood to make the concentration higher than 20 wt%, and then dilute the solution with deionized water, Make the concentration 1 wt%, stir evenly, seal and place in an oven at 60°C until a gel containing...

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Abstract

The invention discloses a beaded ultrafine fiber material with a bead morphology and a preparation method thereof and belongs to the field of preparation of micro-nano materials. According to the invention, by regulating the content of silk fibroin self-assembled nano fibers in a spinning solution, effective regulation on the morphology and dimensions of beads in an electrospinning beaded ultrafine fiber material is realized. The beads in the prepared beaded ultrafine fiber material have different morphologies such as spheres, ellipsoids, spindles and slender spindles, and regulation of the width of the beads in the range of 200-2000nm, regulation of the length of the beads in the range of 500-3000nm and regulation of the length-width ratio of the beads in the range of 1.4-2.8 are realized. The beaded ultrafine fiber material disclosed by the invention can be specifically supported with medicines in different sizes to regulate behaviours of cells and also can realize gradient filtration on granules, thereby having a broad application prospect in the fields of medical and hygienic materials and filtration materials.

Description

technical field [0001] The invention relates to a beaded fiber material that can be used for drug release, gas-liquid filtration and tissue engineering and a preparation method thereof, belonging to the technical field of preparation of micro-nano materials. Background technique [0002] Micro-nano materials refer to materials with at least one dimension in the three dimensions of length, width and height belonging to the micron or nanometer level. Broadly speaking, three-dimensional materials composed of micro-nano materials also belong to the category of micro-nano materials. For example, fibers with a diameter of 80 nanometers, spheres with a diameter of 500 nanometers, films with a thickness of 2 microns, and fiber mats composed of micro- and nanofibers are all micro-nano materials. There are many methods for preparing micro-nano materials, including self-assembly method, template synthesis method, phase separation method, melt blown method, etc. Among them, electrospinn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/02D01F8/16D01F8/10D01D1/02D01D5/00
CPCD01D1/02D01D5/003D01F8/02D01F8/10D01F8/16
Inventor 赵荟菁郗焕杰罗傲
Owner NANTONG TEXTILE & SILK IND TECH RES INST
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